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Effects of the amounts of phosphate fertilizer, and of the proportions of water-soluble phosphate in the fertilizers tested on the phosphorus nutrition of sorghum

Published online by Cambridge University Press:  27 March 2009

B. P. Govil  and
R. Prasad
B. P. Govil
Affiliation:
Division of Agronomy, Indian Agricultural Research Institute, New Delhi 110012
R. Prasad
Affiliation:
Division of Agronomy, Indian Agricultural Research Institute, New Delhi 110012
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Summary

A field experiment was made with sorghum hybrid CSH-1 during the rainy seasons of 1968 and 1969 on a sandy loam soil to study the influence of amounts and sources of phosphate fertilizer on phosphorus nutrition. Concentration of P in the crop and uptake increased with increasing amounts of phosphate and with increasing proportions of water-soluble P in triple superphosphate-dicalcium phosphate and triple superphosphate-rock phosphate mixtures. Relative effectiveness values were calculated from P uptake at harvest by a multiple regression method. For triple superphosphate, nitrophosphate (30% water soluble P), dicalcium phosphate and rock phosphate (from Jordan) the values were respectively, 100, 74, 61 and 22.

Type
Short Notes
Information
The Journal of Agricultural Science , Volume 83 , Issue 1 , August 1974 , pp. 177 - 179
Copyright
Copyright © Cambridge University Press 1974

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References

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